PDF malware analysis — malicious · aa854afef1af5319

MALICIOUS

PDF

69.6 KB Created: 2021-09-28 17:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: d80995dfe9680ecdffc5408da3994cdb SHA-1: 852240d42f4ea1ac0c77e65d913116b8a6fa929e SHA-256: aa854afef1af53193fc7d181cd039727b02ff48fc0b43f3720cfe2baf17cb962

104 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9982

Heuristics 6

PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://lose-weight.tw/upload/files/renexasujogejerudorewapog.pdf In PDF document text
- http://stcforanebanglore.smcim.com/www/js/ckfinder/userfiles/files/guzoru.pdfIn PDF document text
- http://spprp.pl/userfiles/file/wolojolex.pdfIn PDF document text
- http://bloemenwinkelindex.nl/images/uploads/pewusokusafuzazigufogo.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/j1igamfjnes67li1ku2k6sh5gl/85995264235.pdfIn PDF document text
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/e17779040c0515866b479ae21f1eeb2d/86579492679.pdfIn PDF document text
- https://beldapromosyon.com/calisma2/files/uploads/nerovitijodelivokeganola.pdfIn PDF document text
- http://owop.challengersports.com/ckfinder/userfiles/files/mimukutokonidopaviseg.pdfIn PDF document text
- http://marchmontnews.com/imgs/file/xozakefek.pdfIn PDF document text
- https://renewone.de/files/golusixanakebiruzedu.pdfIn PDF document text
- http://tingchucontrol.com/Uploadfiles/files/dofeja.pdfIn PDF document text
- http://banquat.com/userfiles/files/87336803101.pdfIn PDF document text
- https://vnjhanoi.com/upload/files/56664775947.pdfIn PDF document text
- http://karinameal.com/imgdish/files/memebosamizu.pdfIn PDF document text
- http://softwarefactory.nl/images/file/47097803045.pdfIn PDF document text
- http://tk-weld.com/images/library/File/kigori.pdfIn PDF document text
- https://rainbowprinter.com/app/webroot/files/file/61964383537.pdfIn PDF document text
- http://jingkangchem.com/upload/files/zopasilixam.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16146143211388---tonenipekunuduzife.pdfIn PDF document text
- http://peterpan1996.it/userfiles/files/funamidelilododemepumev.pdfIn PDF document text
- http://www.deco-interieure.com/userfiles/file/xumenobafoj.pdfIn PDF document text
- http://tanabuauto.com/js/upload/files/75027589113.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=applicazioni+per+android+per+scaricare+video+da+youtubePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b09e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB09E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000c8b5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8B5	10968 bytes
SHA-256: `3b243d50d08a9c86e01e79a794bd0d86daf013341a5eaba7c0baa46223d5c34d`
`font_02_sfnt_off0000e235.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE235	14668 bytes
SHA-256: `c8ec9ce86b05d990a55cfa0c8e43483ee850b3b3cce9003f0352e144df7ad36f`

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